I think I understand it as some metals are more prone to rust and wear then others? These are used as sacrificial pieces that dissolve(?) to prevent the item you’d like to preserve from wearing or rusting. Help me understand how for instance in a boat the Zink weight bolted to the propeller assembly slows the other metal parts from rusting, as in why do both the sacrificial puck of zinc and the propeller not rust away together when they’re both submerged in the ocean?
In: Chemistry
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